Use bunchee as bundler

package.json

@@ -3,21 +3,29 @@
   "version": "1.3.0",
   "description": "An opinionated toast component for React.",
   "exports": {
-    "types": "./dist/index.d.ts",
-    "import": "./dist/index.mjs",
-    "require": "./dist/index.js"
+    ".": {
+      "import": {
+        "types": "./dist/index.d.mts",
+        "default": "./dist/index.mjs"
+      },
+      "require": {
+        "types": "./dist/index.d.ts",
+        "default": "./dist/index.js"
+      }
+    }
   },
   "types": "./dist/index.d.ts",
   "files": [
     "dist"
   ],
   "scripts": {
-    "build": "tsup src/index.tsx",
-    "dev": "tsup src/index.tsx --watch",
+    "build": "bunchee",
+    "dev": "bunchee --watch --sourcemap",
     "dev:website": "turbo run dev --filter=website...",
     "dev:test": "turbo run dev --filter=test...",
     "format": "prettier --write .",
-    "test": "playwright test"
+    "test": "playwright test",
+    "prepublishOnly": "rm -rf dist && pnpm build"
   },
   "keywords": [
     "react",
@@ -40,10 +48,10 @@
     "@playwright/test": "^1.30.0",
     "@types/node": "^18.11.13",
     "@types/react": "^18.0.26",
+    "bunchee": "^4.2.6",
     "prettier": "^2.8.4",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
-    "tsup": "^6.4.0",
     "turbo": "1.6",
     "typescript": "^4.8.4"
   },